【摘要】 试验检测表明，多种碳氮共渗护气中均含有HCN成份，其浓度高达41．23～149．52mg／m3.研究了消除HCN公害的新途径：密闭工作系统，在炉气排放过程中增设吸收和分解氰装置，能够简便而可靠地实现无公害气体碳氮共渗热处理。更多还原

【Abstract】 The detective results show that there exists hydrocyanic acid with containing between 41. 23 and 149. 42mg/m3 in the multi-atmosphere of carbonitriding or nitrocarburizing. The new method of eliminating envi ronmental pollutionn of HCN was investigated. For closed work system , gas carbonitriding or nitrocarburizing without environmental pollution can be implemented simply and reliably by adding the device of eliminating or ab sorbting HCN in the exhaustion process.更多还原